Computing device



Oct. 14, 1930. P. OKEY COMPUTING DEVICE Filed Aug. 25, 1928 2 Sheets-Sheet 1 INVENTOR.

Perry Ok h 7% ATT RNEY Oct. 14, 1930. P. OKEY COMPUTING DEVICE Filed Aug. 23, 1928 2 Sheets-Sheet 2 INVENTORQ Parry UAW ATTORNEY iii W 27W. 5.5 .l. is i has ?ERRY OKEY, OF COLUMBUS, 05110 COMPUTING DEVICE Application filed August 23, 1928.

My invention relates to a computing device. it pertains. more particularly, to a device einiei it is n xrily limited thereto.

heretofore,computing devices have been My invention contemplates the provision of a simple mechanical device that is adaoted to indicate or record the pro-duct w ien one number is mul" lied by another or to indicate the quoti T when one number is di by another. invention also conten the provision simple and efficient mechanical devi nich will perform the above named calcula ons irrespective of the merical value of the numbers used.

Various objects and advantageous features of my invention and the principles embodied therein may be seen in the following description and the preferred embodiment of my invention may be seen in the accompanying drawings w erein similar characters of reference designate corresponding parts and wherein:

Figure 1 is a view showing one embodiment of my invention, the of the device being in such position as to indicate zero.

Figure 2 is a view similar to 1 show ing the parts of tl e device such position as to multiply one number by another or to divide the ire-duct of these numbers by one of such numbers.

Figure 3 is a diagrammatic view show uo the principle embodied in my invention.

Figure l is a perspective view showing the supporting part of my device.

Figure 5 is a perspective view showing the remaining parts of mv device,

Figure 6 shows a plurality of views of a Serial No. 301,529.

us d

ie we desired to malre permanen when it is ind cations or records of the mathematical result achieved.

Referring to the drawings, particularly Figures 1 and 2, It have shown one form of my invention as consisting of a base plate 1 having standards 2 and a bracket 3 extending upwardly therefrom. The bracket 3 is calibrated as at 4 and has a guide 5 at the upper end thereof through which a bar or rod 6 is adapted to slide. Such rod. or bar is provided with a pointer 7 at its lower end for a purpose hereinafter apparent.

A horizontal bar 8 is rigidly mounted on the uppermost ends of the standards 2 and provides a guide bar for a member 9 that is slidably mounted thereon. The guide bar 8 is calibrated as at 10 for a portion of its length.

lhe member 9 has a pointer 11 forming an integral part thereof and disposed on one of its ends. This pointer is adapted to register with the calibrations 10 on the guide bar 8. Rigidly attached to or forming an integral part of the sliding member 9 and disposed at the end thereof which is opposite the end at which the pointer 11 is located is a quadrant 12 that is calibrated as at 13 from zero to any desired terminal number. Such quadrant is notched on its inner edge as at 14.

As shown best in Aigure 2, a bifurcated member or bracket 15 is pivotally mounted as at 16 on the sliding member 9 by means of a member 17 that is disposed between the bifurcated ends thereof. One end of this bracket or member 15 carries apointer 18 that is adapted to register with the calibration 13 on the quadrant hereinbefore described and a latch 19 is mounted on the same end of the member 15 as the pointer 18. This latch mem her is adapted to cooperate with the notches 1% in the quadrant to lock the member 15 in such position that the pointer 18 will register with the desired number of the calibration on the quadrant.

A block 20 is so mounted between the parallel sides of the bifurcated member 15 that it will slide freely along the length of such member and the upper end of the rod or bar 6 is pivotally connected to such block.

The operation of this device is based on mechanism which may i the principle or axiom that the length of the dunderstood that the calibrations 4, 10 and 13 v are arbitrary. As shown in Figure '3 the zcalibrations 10' and 13 result from theequal sine of any angle is equal to the length oi": the perpendicular dropped from one end of a circular arc upon the radius of the other end when the ratio or" this perpendicular to the radius is considered as a function of the angle subtended by the arc. Also, to those familiar with the principles of triangles, it will be understood that the length of the sine for any given angle is directly proportional to the base line of the triangle and, therefore, will vary in length in direct proportion to the variation in the length of the base line. Further,'the length of the sine for varying angles will vary in directproportion to the variation in the length of the hypotenuseot the triangle since it is a well-known principle that the sine of any angle is equal to the length of the side opposite the angle divided by. the

length of the hypotenuse.

In the operation of my device, I wish it division of the base line A and the line B which is perpendicular thereto of an isosceles right triangle ABC. The calibration 13 is transferredto a circular are D which, in the other figures of the drawings, takes the form of the quadrant 12 by drawing a series of hypotenuses from a common point on the base line A of the triangle through a series of equally spaced points on the perpendicular side B of the triangle to the circular are D that has the same center as the juncture oi the hypotenuses G and the base line A. i

.The calibratione is such that the spacing between the numerals thereof will be directly proportional to theamount of variance in the length of the base line A and the amount of .movement of the hypotenuse C of the trian gle to vary the size of theangle AC. Calibration t is of such nature that, when the perpendicular side B is moved closer to the angle AC, thereby varying the base line, the length of the perpendicular B will vary in direct 'p'roportionto the variance in the length of the base line A. The length of the perpendicular side B will also vary in direct proportion to the variance in the length of the hypotenuse C i when the angle AG is made larger orsmaller by moving the hypotenuse.

In the mechanism hereinbefore described,

the calibration 10 represents the base line of proportionate variation in the length of the perpendicular when the baseline is. varied.

or the hypotenuse is moved to varythe size of l The member 15 represents the hypotenuse ofa the an le subtended by the qua drant 12.

triangle in the above mechanism,

The various calibrations l, 10 and 1am such that, when the member 9 or" the mechaism is so moved as to locate the pointer 11 at a given number on the calibration 10 and the member 15 is so moved as to locate the pointer 18 at a given number on the calibration 13, the pointer 7 will be consequently moved to register with a number on the calibration that is the product of the two numbers that have previously been selected on the calibrations 10 and 13. q

in the event that the deviceis employed fordivision, the numeral on the calibration 13 would represent the divisor, the numeral on the calibration a would represent the divilend and, the numeral on the calibration 10v would represent the quotient although it will be understood that either of the numone of the numbers to be multiplied that is disposed on the calibration 13 on the quadrant. Then, the sliding member 9 is moved along the guide bar 8 until the pointer 11 registers with the other number tobe multiplied which forms a part of the calibration '10 on such gu de bar. Since the length of the sine or any angle varies in direct proportion to the variation in the length of the base line'or the length of the hypotenuse, the rod or bar 6 will be moved upwardly by the movement of the member 15 which forms the hypotenuse and the movement of the member 7 9 which for us the base line to such distance as to indicate on the calibration l the product of one of the numbers multiplied by the other. As hereinbei ore stated, the graduationsor calibrations i are so arranged proportionately to the other calibrations that this may be accomplished. A direct rever sal of procedure maybe followed in moving the parts otthe device, that is, the sliding member 9 may be moved prior to the movement of the member 15.

ln-the use of my device in division, the

latch 19 may be first released and the'pointer 18'moved into registry with the divisor'on the calibration 13. Then, the sliding memher 9 may be moveduntil the pointer? on the rod or bar 6 is in registry with the dividend on calibrationa. l Vith the parts in this position the pointer 11 on the sliding member 9 will register with the quotient or the result to be achieved on the calibration In Figure 6 of the drawings, I have shown a mechanism which is adapted to operate in conjunction with the various parts of my device hereinbefore described in the event that itis desired to make permanent record of the'results obtained in multiplying, adding. iii

the side opposite the angle of the subtracting or dividing two numbers. In this figure the sliding rod or bar 6 is equipped wi h rack teeth 21 which mesh with a pinion 22. The pinion 22 is mounted on a shaft 23 which also carries a series 01" wheels 2 1- having numbers disposed about their outer circular surface. In this construction, the highest value or number on the wheels 24 would c the product of the highest numbers on the calibrations l, and 13.

When such structure is used in division calculating, the wheels 24 would necessarily be actuated by the movement of the sliding member 9 instead of by movement of the rod or bar 7 and the larg st number on the type wheels would be the quotient or" the smallest number on the calibration 13 when such number is divided in o the highest number on the calibration 4.

While I have shown and described my invention as being particularly adapted to mathematical calculations involving multiplication or division, it will be apparent that my device might be adapted to other uses 4 with equal success. For instance, referring to the accompanying drawings and the preceding description, it will be apparent that the calibration l might be such as to indicate the amount or" change in the le th of triangle that is formed by the base and the hypotenuse oi the triangle, for instance, the angle AC rown in Figure 3, This one to the fact that the calibration t is arbitrary and may merely used to indicate the length of such side while, the calibrations l0 and 13 also being arbitrary may be used indications of the length of the base line the movement of the hypotenuse in va-i ihe angle.

Further, referring to the drawings nd the preceding description, it will be apoar nt that l have provided a simple {311C ettlcient device whereby computations involving mintiplication and division be accomplished mechanically.

Having thus described my invention, what 1 claim is:

l. A computing device operating on th principles of a triangle comprising a mean for forming a triangle, means for varying the length of the base line of said triangle by moving the point 01 int rsection between the side forming the hypotenuse of the triangle and the base line, means for holding constant the angle at the point or intersection while the base line is varied, and means to" indicating the change in length of the side opposite one angle resulting from the variation in the length of the base line.

2. A device for multiplying or dividing comprising a plurality of elements disposed to form a triangle, said elements being adjustable for varying the length of the base line by moving the point of intersection between the side forming the hypotenuse of the triangle and the base line along such base line, means for indicating the length of the base line, means for varying the angle formed by the base line and hypotenuse, means for indicating the change in the length of the side opposite the angle, and means for indicating the product of the lengths of the adjusted base line and side.

8. A device for multiplying or dividing comprising a plurality of elements so disposed as to produce a triangle, said elements being adjustable to vary the length of the base line by moving the point of intersection between the side forming the hypotenuse and the base line or vary the size of the angle, a pointer and calibration to indi ate the length of the base line, a pointer and calibration to indicate the proportionate length of the sine angle, and a pointer and calibration whose position is cetermined by the relative on of said first two pointers and calis, sail last amed calibration being so oned with relation to the other two calibrations that the position of one of the pointers on its calibration will indicate the nt of one of the calibration numerals .7 ited divided by the calibration numeral indicated by the other'pointer.

I. A device for multiplying or dividing rising a plurality of elements so disposed as to produce a triangle, said elements 'no; adjustable to vary the length of the baseline by moving the point of intersection between the side forming the hypotenuse and the base line along such base line or vary the oegree of the angle formed by the base line and the hypotenuse, a pointer and calibration to indicate the length of the base line, a pointer and calibration to indicate the proportionate length of the sine of the angle, and a pointer and calibration whose position is determined by the relative position of said first two pointers and calibrations, said last named calibration being so proportioned with relation with the other two calibrations that the position of the last named pointer on its calibration will indicate the product of the numerals indicated by the first two pointer 5. A device for multiplying or dividing comprising a plurality of elements so disposed as to produce a triangle, said elements sing adjustable to vary the base length of said triangle by moving the point of intersection between the side forming the hypotenuse and t is base line along such base line or to vary the angle or" such triangle, a series of calibrations for indicating the adjusted length of the base, a series of calibrations for dicating the proportionate length of the sine of the angle, and a third series of calibrations having a definite relation to the movement of the hypotenuse of the triangle and so proportioned with relation to the other two series of: calibrations. as o in cat th product of he numeral el h other two a bra ions- 6. A mechanism for multiplying one numher by another or dividing one number by another comprising, in combination, a calibration laid out on apart of the mechanism that forms the base line of a triangle, a calibration laid out on another part of the mechanism consisting of equal divisions on a line perpendicular to the base line, a bar pivoted at point on the base line, said bar being ustable tointersect the perpendicular line, means for moving the pivot of said bar along the base line and means slidably connected with said bar for indicating the length of the perpendicular line.

7. A computing device comprising a base,

standards extending upwardly from said base, a bracket mounted on said base, a member adapted to slide in said bracket, a pointer on the lower end of said member, a-horizontal bar mounted on said standard, and a member slidably mounted thereon, said member embodying a pivoted arm and a quadrant with" which one end of said arm is adapted to register. I

8. A computing device comprising a base, standards extending upwardly from said base, a bracket mounted on said base, a member adapted to slide in said bracket, a pointer on the lower end ofsaid member, a horizontal bar mounted on said standard, and a member slidably mounted thereon, said member embodying a pivoted arm and a quadrant with which one end ofsaid arm is adapted to register, a block carried by and slidable with relation to said pivoted arm, one end of the member which is adapted to operate in the bracket mounted on the base being pivoted to said block.

- Intestimony whereof I Signa i e- PERRY OKEY.

hereby aflix my 

